John Reno St. James was arrested Wednesday by California Highway Patrol officers for the death of Natasha Noland, 25, of Santa Cruz.

Noland was a popular Santa Cruz High School graduate who worked at her parent's surf store, Pacific Wave Surf Shop, as a buyer in downtown Santa Cruz. Her friends described her as a fun, upbeat, and kind person.

St. James, 56, was arrested at his house in Yucca Valley, Calif. on charges of vehicular manslaughter and involuntary manslaughter. He was indicted by a Santa Clara County grand jury on May 3 and faces a maximum of six years in prison if convicted.

"The grand jury determined that St. James exhibited gross negligence in overseeing the maintenance of his company’s bus and ensuring his passengers’ safety," Deputy District Attorney Brian Welch said Wednesday.

On July 27, 2012, Noland and her friends attended a Brad Paisley country music concert at the Shoreline Amphitheatre in Mountain View, and the group hired a party bus to take them back to Santa Cruz. A fight broke out between Noland and a 20-year-old Felton woman, and they somehow fell through a party bus' doors while the bus was traveling 45 mph along Highway 17 in Los Gatos.

The bus ran over Noland, and CHP Officer D.J. Sarabia said the accident scene was "very chaotic" when officers arrived.

The bus driver said she did not hear the fight happening because loud music was playing, and CHP investigators said every passenger who was riding the bus was intoxicated.

Many questions still remain on how the accident happened. The CHP has declined multiple requests from the media to release its full investigation report.

Welch said the grand jury's investigation was also secret and declined to release more details on what happened before, during, and after the accident. The grand jury's report and conclusions, however, may be released in two weeks if a Santa Clara County judge decides to allow it.

PHOTOS: Santa Cruz party bus victim Natasha Noland

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In July 2012, Natasha Noland, a popular 25-year-old Santa Cruz woman, fell out of a party bus on Highway 17 in Los Gatos and died.